What's your idea for The Knot?

Separate dates for Ceremony & Reception

We're having our Ceremony a few months ahead of our "reception" party. It'd be great if I could put in those distinct dates, so that the Due dates on my events were lined up properly.
Currently, I'm having to set to the early date, make a manual note of the ceremony-oriented items, and their due dates. Then update to the Reception date (most of the tasks are for the reception), and then go back in and back-date the Ceremony tasks to their true earlier due date.